Upgrading simply because I like to play with the latest and greatest. Haven't got high hopes though that IB will bring much to the table for air/water overclocks.
If you can wait ~45 days(I believe) then Ivy Bridge will be available with slightly faster CPUs at roughly the same price points. Right now though I'd say grab a 2500K and run it at a smooth 4-4.5 GHz. Just make sure to buy a semi-decent heatsink as even though these are low-wattage CPUs they...
You'd be surprised what some of the crunchers will work with. I just recently sold a 4 year old 700w PSU for cost of shipping plus a little beer money. Beats trashing it.
I doubt this card will see the light of day outside of a few appearances in reviews. Reminds me of the GTS250 x2 I believe that Zotac was working on. Sounded like a fun toy :(